A few technical rounds, with minimal behavioral questions.
I can recommend running through LeetCode questions associated with Meta. While they would not necessarily be among those asked, the style is the same.
Some of the questions I got were a graph cloning question and an interval merge question.
The following metrics were computed from 206 interview experiences for the Meta Software Engineer role in United Kingdom.
Meta's interview process for their Software Engineer roles in the United Kingdom is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Meta's Software Engineer interview process in United Kingdom.